Key lock



J. JUNKUNC.

KEY LOCK.

APPLICATION FILED JAN. 7. 1921.

Patented Apr. 4, 1922.

lig

Ill.

JOHN JuNxUNc, oF CHICAGO, ILLINOIS.. i

mix

l Specification of Letters Patent.

Application led January 7, 1921. Serial No; 485,595. 'i

To all whom t may concem:

Be it known that` I, JOHN JUNKUNG, a citizen of the United States, and aresident of the city of Chicago, in the county of Cook and'State ofIllinois, have invented a certain new and useful Key Lock; and IV dohereby declarethat the following is a full, clear, and exactkdescription of the same, reference being had to the accompanylngdrawings, and to the numerals of reference marked thereon, which forni apart. of this specification.

This invention relates to a lock of the type that is operated by havinga key thrust into it and does not require the rotation of the `lt isanobject of'this invention to provide' such a lock that can be made ofparts that are inexpensively manufactured.

It is a further object of this lnvention to produce a system of lockswherein the lindi' vidual locks may be varied so Las to requiredifferent keys without requiring any' special or complicated'manufacturing processes to produce the necessary accuracy.

It is a further object of this invention to present to the loperation ofthe keyV a setrof locking slides which vwill be all brought intounlockingposition when thekey is thrust into place.

It isa further objectr of this invention to provide one spring whichshall hold a plurality of locking slides in their respective lockingposition.

Other and further important objects of this invention will be apparentfrom the disclosures inthe specification and the accompanying drawings.

The invention (in a preferred form) is shown in the drawings andhereinafter more fully described.

Onl the drawings: f Figure 1 is a top plan view of the lock. Figure 2 isa similar view with the cover ofthe lock casing removed. Figure 3 is atop'plan view of the vlock and key with the shackle of the lock inunlock position. v Figure 11 is a section 'ust about the bottom of thelock housing, t elock having v'been reversed to show this section inplan. Figure 5 is a section on theV line 5-5 of f Figure 2.

Figure 6 is a section on the line 6-6 of Figure 5.

' Figure 7 isv a section on the line 7-7 ofy Figure 5 looking in thedirection indicated by Vthe arrows, the shackle being omitted.

Fi ure 8 is a view similar to Figure 7 showing the key inserted. f Y

Figure9 is a d'etailrview` of one'of the sliding locking members, andvFigure l() isa similar view of another of these members. f f

As' shownon the drawings:` n The lock comprises a shackle -1 Y havinglegs 2 and 3 Vwhich enter into the housing 4. This housing consists of abox 5 and a cover 6 which tits into a shoulder 7 The cover is secured tothe box by spinning or otherwise forcing the edge `of the wall of thebox over it as indicated in Figures 5 and 6. y At the bottom of the boxis a piece 8 which is formed with a slot 9 to receive a s ring 10. Thepiece 8 is cutawayas indicate Y at 11 to afford room for the movementof' the spring 10. The end of this spring bears against an end 12. uponthe leg 3 of the shackle.v

correspond with thercross section of the key' as indicated at 14 in-yFigure 5.

. In theiupper partof thefbox Vis a -piece15 which has portions -16 and17l cti-operating with the portion 13 of they piece 8 to accuratelyposition'the pieces with respect to one another. The pieces Sandy 15.constitute filler blocks which serve to support, locate Patented' Apr.4, 1922.

is higher i and guide the several'moving-'parts within the'box 5. Thepiece 15 has other portions 18 and 19 which conform tothe outline of thehousing 11. Between the part 16 andv the partf18 is a passage 20 whichis to accommodate the leg 2 ofthe shackle. recess I21 separates Vtheportion-17 from the portion. 19. The .passage 20l goes entirely acrossthe housing but the passage 21 goes only part-way through the housingbecause' it needs to accommodate .only theshorter le 3 of the shackle.There are openings 41 an 42 in the housing to accommodate the legs 2 and3 respectively'of the shackle.

A similar4 The connection between the portion 18 and the portion 16 ofthe piecelis separated by a series of slots intofbridge pieces 22.

Each of the bridge pieces 22 has a shoulder the upper surface of thebridger pieces 22.

The shoulders 23ail`ord a stop so that the spring cannot pass further tothe right than these shoulders.

These parallel slots, provided in the pieces 8 and 15, are at rightangles to the passages 20 and 21. .'To provide these slots theupstanding portion 13 of the part`8 is cut as shown at 26. A portionofthe wall of one of these slots in the middle part ofthe piece 15isshown at 27. Y The under face of the ymiddle portion o this piece 15isprovided" with several oblique surfaces asindicated at 28 toco-o'perate with the` oblique surfaces 14E-to make a key- Way. Thesesurfaces vwill be parallel when the two operative faces of. the key areparallel, so that the key is of uniform thickness;

but this is not necessary. l Grooves or ridges may be provided upon thekey and acorresponding shape given tothe key-way without 'diiculty Inthe slots there slide a series of sliding locking members 29. Upon the.lower edge .of each of these members, which lis the edge presented tothe reader in Figures 7 and 8, are several recesses. Thecentral one ofthese, 30, is of a width to correspond with the key. This recess isrectangular so that itsV two ends serve to abut against'the edges of thekey and positionA the member when the key isinserted, as will be laterexplained. The left-hand recess 31 is arcuate. When this recess ispositioned near the end of the member, as shown in Figure 9, the arcdoes not return to the longitudinal edge of the member.

member 29, but terminates in the end of the Ifl the notchv 311s nearer'the center fof themember 29 the arc Will return to the longitudinal edgethereof as illustrated p in Figure 10. The right-hand notch 32 may inthe same waybe completed without re turning to the longitudinal edge, ormay so return.I ySome of thesel members 29 are located in the housingbeyond the ends of the vgrooves 33, beveled as indicated at 33.

- of the shackle.

wWhen the shackle is inserted fully into theY housing these groovesregister withl the grooves containing the sliding locking members 29. pTWhen these members are positioned by means of the spring 25 someportions of the lower edges of the sliding locking members will occupythe grooves 33 inthe legs The key 34- of the lock consists of a handleand a shank 35 shown in dotted 4lines in Figure 8. A, cross-section Vofthiskey would bea zig-zag to co-operateA with the key-Way illustrated inFigure 5 or there maybe ridges or grooves on the key to correspond, to agrooved or ridged key way.`` lThe edges of thev shank of the key aremade und'ulatedtov form cam surfaces whichv co-operate with the sides ofthe notches 30 to position each of the members 29 as illustrated inFigure 8. The end of the key abuts against the housing at the end of thekey-way to definitely position these -undulations with respect to theseveral members 29. p

'Whenl the members29 are thus positioned by the key the arcuaterecessesv will be in register with the surfaces of the passages 20and`21v respectively` and one or more vof the members 29 will contactWith the spring 25 at their left-hand ends as shown' in Figure 8,

pressingthe spring 25-toward the left and 8 the spring 10 vshown inFigure t will ejectv the shackle. In this movementY the 'spring `willnot travel beyond the edge of the housing, being stopped by the edge ofthe .space 11 but the shackle can travel lby its momentum until stoppedas explained below.

A portion 36 of the leg 2 of the shackle is flat as shown in Figures 5and 6, and the portion 37 beyond this flattened portion is made of equalVdiameter with the leg 2. Some of the members 29, as illustrated .inFigure 5, have Vthe arcuate notch 31 Vdeep enough to escape theflattened partof the leg 2 but not deep enough to permit the fullsif/.edportion 37 of the leg to'pass when the spring 1() ejects the shackle 1.The outward movement of the shackle will be stopped by the contact ofthe head 37 with the iirst of the members 29 whose notchv is not` deepenough to permit this end to pass.

Between the edges 37 and the remainder of the shackleleg 2 is a groove38 to permit rotation of the shackle relative to the housing. Thisenables the lock to be readily separated from whatever article is lockedthereby, even though the position where the lock is used may not. bereadily accessible. The head 37 is provided with a beveled sur- `planeof the base of the yshackle is provided with a beveled surface 40.

Operation;

To apply the lock, the shackle l is passed through the parts to besecured together and then rotated into a position parallel to thehousing. The shackle is then thrust inward. K The beveled urfaces 33 and39 of the head 37 and grooves 33 will contact with the edges of thenotches 3l in the members 29 and force the members into a position thatwill permit the leg 2 to pass. portion 40.01 the end of the leg 3l andsurfaces 33 will contact with the notches 32 in the members 29 and forcethem to a position that will let this leg pass. When, however, theshackle l arrives in its final position the grooves 33 will registerwith the grooves in the members 8 and 15. The spring 25 will then forcethe members 29 into locking posi` tion.

l the shackle will then be free from the housing. The shackle may berotated about the longer leg 2 as an axis to a position in which-y themembers which were locked togethermay be readily freed from the shackle.

It will be observed that the only thing that needs to be different indifferent locks to make each lock correspond to its own key only is theposition of the notches 31 and 32 in the several members 29.Consequently, the other parts of the lock may be made by standardizedmethods of manufacture such las die casting and only thecutting of thesenotches must be individual to each lock. Moreover, the members 29canreadilybe positioned in a machine by means of the notches 30 so thatthe accurate location of notches 3l and 32 need be onlya question ofcorrectly settingone machine. f

I am aware that numerous details of construction mayV be varied througha wide range without departing from the principles `of this invention,and I therefore do not purpose limiting the patent granted otherwisethan necessitated by the prior art.

I claim as my invention :y l. In a lock, a circularhousing, a filler Inthe same way,the beveled block therein, arcuate recesses in said fillerblock, a spring having its endsmounted in said recesses, and a series ofvslidable locking members actuated by said spring.

2. In a lock, a h ousing, a pair of iller vblocks in said housing, agroove in one of said blocks, an upstanding part on the other of saidblocks adapted to occupy said groove, whereby the blocks'are positionedrelatively to each other and the housing, a keyway between saidupstanding part` and the vfloor of said grooye, a seriesof grooves insaid blocks crossing said keyway, .and sliding members in saidlast-namedgrooves. f

3. In alock, a housing, a filler block in said housing, comprising twodepending portions, and aseries of bridge pieces coniiecting them, apassageway between said depending portions and beneath said bridgepieces, a shackle leg sliding in said passageway, each of said bridgeportions having a shoulder, said shoulders'heing in alignment over saidpassageway. r Y

LhIn a lock, a shackle, having Vunequal legs, a housing having twopassages into which the legs of the shackle enter to differentlengths,fa plurality of sliding locking members somey movable acrossboth yof said passages and the remainder movable across one only ofsaid` passages, said sliding locking members having cut away portionsshaped and located so that in oneV position of the sliding'lockingmembers the edges of the cut away portions will be flush with thesurfaces of said passages, the sliding locking members which are movableacross both of said passages each having two such portions andthe'othersliding locking members each having one such portion, each of said'sliding locking membershaving a notch whereby it may be positioned by akey, said notch being between the two -cut away portions in the caseswhere' there are two.

5. In a lock, a shackle, a housing having passages into which the legsof the shackle i' enter, a plurality of sliding locking members Ymovable across said passages, said sliding locking members having'cutaway portions shaped and located so that in one position, of the slidinglocking members the edges of the cut away'portions will be flush withthe sur-` faces of said passages, each of said sliding locking membershaving a notch whereby it may be positioned by a key, said notch being vbetween the two Acut away portions.

In testimony whereof I have 'hereunto subscribed my name in thelpresence of two subscribing witnesses.

` Y JOHN JUNKUNC;V

Witnesses v n CARLTON HILL,

`W. A. WHITTEN, Jr.

